ColdLog

ColdLog – Cold Plunge Tracker

One tap. One plunge. All the data you need.

ColdLog is the simplest way to track your cold plunge and ice bath sessions on Apple Watch. No complicated setup, no unnecessary features – just start your workout and let your Watch capture everything automatically.

DESIGNED FOR APPLE WATCH ULTRA

ColdLog is built with Apple Watch Ultra users in mind. Use the Action Button to instantly start your cold plunge session – even with wet hands. Add the watch face complication for one-tap access. Water Lock activates automatically when you enter the water.

COMPREHENSIVE DATA COLLECTION

Every plunge tells a story. ColdLog captures more data than any other cold plunge app:

• Water Temperature – Live readings from Apple Watch sensors
• Duration – Precise timing of every session
• Heart Rate – Continuous monitoring throughout your plunge with detailed graph
• Calories Burned – Science-based calculation using cold-induced thermogenesis research
• GPS Location – See where you plunge on the map
• Weather Conditions – Outside temperature, humidity, and conditions (Pro)
• Workout Route – Sessions appear in Apple Fitness with full route

SCIENTIFICALLY ACCURATE CALORIE CALCULATION

Unlike other apps that guess your calorie burn, ColdLog uses peer-reviewed research on cold water immersion. The formula accounts for water temperature, session duration, your personal BMR, and post-immersion thermogenesis – that "afterburn" effect when your body continues burning calories after you exit.

INSIGHTS & ANALYTICS (PRO)

Track your progress with beautiful monthly charts:

• Time in Water – See your total cold exposure
• Temperature Trends – Track how cold you're going
• Heart Rate Patterns – Monitor your body's adaptation
• Energy Burned – Visualize your calorie expenditure
• Cold Stress Score – Measure your overall cold exposure intensity

SEAMLESS SYNC

Start a session on your Watch, view details on your iPhone. Everything syncs automatically via WatchConnectivity. All data stays private on your devices and in Apple Health – no accounts, no cloud, no tracking.

CAPTURE & SHARE YOUR PLUNGES

Add up to 3 photos to each session – build your personal cold plunge album. Frozen lake? Ice hole? Ocean sunrise? Capture those epic moments.

Ready to share? Choose from multiple card styles: a clean stats-only card or stunning photo overlays with your session data. Share to Instagram, WhatsApp, or anywhere else. Each card shows your water temperature, duration, weather, and location.

KEY FEATURES

• One-tap workout start from Apple Watch
• Action Button support (Apple Watch Ultra)
• Watch face complication for quick access
• Automatic Water Lock activation
• Timer alerts with haptic feedback (Pro)
• Auto-save option for hands-free workflow
• Session photo gallery (up to 3 photos)
• Custom share cards with photo overlays
• Personal notes for each session
• HealthKit integration
• Celsius & Fahrenheit support
• No account required
• Offline-first design

WHO IS COLDLOG FOR?

Whether you're a Wim Hof method practitioner, cold water therapy enthusiast, competitive ice swimmer, or just starting your cold exposure journey – ColdLog helps you track progress and stay consistent.

Built by cold plunge enthusiasts who wanted an app that works as simply as stepping into cold water. No bloat. No distractions. Just you, the cold, and your data.

FREE TO USE

ColdLog is free with all core features – track duration, water temperature, heart rate, calories, and GPS location. History is limited to 3 sessions. Upgrade to Pro for unlimited session history, detailed insights with charts, weather tracking, and timer alerts.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://coldlog.eu/privacy/